Cream separating milk bottle



' Nov. 19, 1940. i w, bALlsTER' 2,222,511

CREAM SEPARATING MILK BOTTLE Filed Nov. 21, 1959 Patented Nov. 19, 1940 UNITED" STATES PATENTRDFYFICE CREAM SEPARAT'ING MILK BOTTLE 1, Raymond W. McAlistenNew York, N. Y.

\ Application November 21, 1939, Serial No. 305,538

2 Claims.

The present invention relates to improvements in cream separating milk bottles, and has for an object to provide a bottle having a neck construction narrow horizontally and/elongated vertically for the purpose of holding and exhibiting the cream fraction of the milk to betteradvantage, and so constructed as to lend itself in a peculiarly novel way to cooperatewith a milk separating attachment of an improved form.

It is another object of the invention to provide a milk separating attachment for a. milk bottle in a which the attachment is so constructed as to interlock with the parts of the milk bottle when in its final position to dispense with the continuous attention of the housewife who may hold the bottle in one hand during the pouring operation,

leaving the other hand entirely free for other operations, such for instance as the,holding of a container into which the cream is, being poured. 39 A further object of the invention resides in providing an improved cooperating milk bottle and cream separating attachment in which the modification of the bottle from standard practice is in minimum points of construction having no Figure 1 is a side elevation, withparts broken 40 away and parts shown in section, of an'improved cream separating milk bottle constructed in accordance with the present invention with the cream separating attachment in place.

line 22 in Figure 1.

Figure 3 is a perspective view of theicream separating attachment apart from thelmilkbottl-e.

Referring more particularly to the-drawing, Ill represents a milk bottle of a form. and sizepgenerally conforming to standard or conventional practice having a breastpart l.l,.constricting to' the neck of the bottle which is peculiarly formed, consisting of a valve section I2, a verticallyelongated bulged section 13 andrasmouth section l4; Inthe mouth sectionis provided-the usual seat;

, also to afford an elongated tapering valve section" .diameter somewhat greater than the diameter inafter, and will be more particularly pointedout,

Figure 2 is a horizontal section taken onthe l5 for the cardboard disc cover usually employed to close the bottle. The mouth portion I4 is thickened to produce a lip having the annular external groove l6 which is utilized in cooperation with the attachment as hereinafter more fully explained.

- The valve section I2 is preferably thickened as to its cross-sectional wall in order to add strength to the bottle at this constricted area and in order.

or surface I I on the inside of the section I 2. This section i1 is in fact generated on the frustum of acone Which'is inverted, the wider mouth of the valve surface I7 being disposed at its upper end,

and the valve surface tapering downwardly to a 5 more constricted diameter adjacent the breast l l. The. cream separating attachment is formed :witha cup l8, being preferably a concavo-convex section of sheet metal or other appropriate material having the rim [9 having a normal of the. constricted lower end of the valve surface ll into which the cup l3 slidably fits as indicated .in Figure 1.

Due to the inherent resiliency of the material of which the attachment is made, and due also to the favorable use made of that inherent resiliency by theformation of the cup 18 in a concavo-convex section, the rim [9 may expand and contract concentrically or diametrically, and thus in mov 0 ving downwardly along the conical surface ll, the rim [9 will seek a position of tight fit against such conical valve surface ii. The rim I9 may be slightly contracted in forcing the cup l8 down- .wardly with reference to the more constricted lower portion of the valve surface ii, the cup [8 thus being put under slight tension which reacts against the valve surface I! to form an extremely tight fit, this condition of tension being available .with extreme lightness of pressure by reason of the fact that the rim l9 upstands from the dished bodyof the cup land is diametrically and concentrically free and without interference in its expanding and contracting action. These cooperating parts therefore serve to produce a fluid tight valve of very high sealing properties.

--The cup 18 is suspended between arms 20 which are preferably connected with the rim It at diametrically oppositepoints and may, for convenience of construction, be struck out from the. same sheet of metal with the cup i8, being simultaneously or afterwardsshaped up along with the same shapingmethod as produces the udishing of the cup l8.1 Such arms Zli will-preferably be narrow so as to, perform their-function conical valve surface I1.

of inserting and removing the cup l8 without imparting undue rigidity to the rim H] as would be the case with wider or thicker arms. Both the arms and the cup will be struck out of light gauge metal which will have the desirable flexibility and strength. I

The arms 20 are sufficiently long to enable the cup l8 to be seated in the valve section l2 as indicated in Figure 1. -At the upper ends the arms are outwardly turned to provide shoulders 2|, such shoulders being flexible and resilient and adapted to rest upon the upper part or mouth H! of the bottle when the cup It seeks a final position in the valve section 12.

Thus the shoulders 2| provide stops which permit of a limited adjustment of rim I9 with reference to valve seat I! in that the shoulders 2| are free to flex upwardly about hinged points 22 with the arms 20 when forcing the cup l3 down to a light wedging position upon the frusto conical surface l1. In this way the flexibility of the shoulders 2! cooperates with the inverted frusto conical valve surface I! and with the expansible and contractile rim IQ of the flexible and resilient concavo-convex cup l8.

From the outer ends of the shoulders 2|, the metal is turned down, as indicated at 23, in substantial parallelism with the arms 20 and provides elbows which are spaced from the arms 20 a suitable distance to lie in contact with the outer surfaces of the lip or mouth M of the milk bottle. This condition is shown in Figure l. The inherent resiliency of the metal in and about the upper ends of thearms 20 and the shoulders 21 will tend to draw the elbows 23 inwardly against the lip M. It will also be noted in Figure 1 that the arms 20 stand inwardly from the inner wall of the lip I 4 and that spaces intervene between the arms 20 and such inner wall of the .11 40 p M- This prevents binding at this point. It allows the arms 20 to have a limited lateral or diametric movement back and forth across the mouth of the milk bottle, such as may be necessary or desirable in freeing the rim N} from the Such spaces 24 also permit freedom of the resiliency in the metal of the arms 29, shoulders 2! and elbows 23 to the end that such inherent resiliency will tend to clamp the shoulders 2| down upon the top of the ,"i lip l4 and cause the elbows 23 to tightly hug the outer wall of the bottle lip l4.

At the lower free ends of the elbows 23 the metal is bent inwardly and downwardly to provide projections or latch noses 25 having rounded in- .22 ner walls for seeking the annular grooves l6 of the milk bottle and interlocking under the lip I4,- The inherent resiliency of the metal will tend to cause these noses 25 to app-roach one another i across the diameter of the bottle neck and tend to force the noses 25 into the groove l6 thus binding the attachment firmly in place upon the bottle.

Curved fingers 26 are bent outwardly from the lower ends of the noses 25} These fingers extend out substantially horizontally and their incurved upper surfaces are made to conform generally to the curvature of the human fingers which they are positioned to receive in a downward motion of the hand when forcing the cup I8 into position. i

In the use of the device, the improved milk bottle l0, conforming as it does to external standards, can be filled atv the dairy plant by conventional filling machines and the paper disc caps put in place upon'the seats 15.. In this .place.

' recess l6.

condition the bottles are delivered at the door of the customer and due to its lighter specific gravity the cream as usual will ascend to the top. The neck is thinner horizontally or diametrically and is a little longer vertically than the neck of the standard bottle in order to show the cream to better advantage and to provide for the easier insert of the cream separating attachment.

The housewife removes the disc cover from the seat l5 and inserts the attachment, moving the cup dowrithrough the body of cream in the neck. The cup ill will freely pass down in the wide space 24 of the mouth and in the wider bulged section l3 the cream will have ample space to flow up around the cup I8 as it descends into The lower part of the valve section I2 will be at substantially cream line so that the 7 cup I8 and its rim ill will seat eventually on the valve surface IT at such cream line, the cup I 8 forming a barrier with. a tight fit between the milk and the cream and preventing the milk from commingling with, the cream permitting the cream to be poured from the bottle separate from the milk. I .The attachment is put in place by simply moving the cup, [Band the arms 20 down within the elongated neck of the bottle until the shoulders 2i strike the upper end of the bottle at which time the rim IE will seat upon the valve conical surface ll. At this same time the elbows 23 will embrace the bottle lip l4 and the latch noses 25 will have entered the annular groove It. The final downward movement of the attachment may be accomplished by placing the fingers on the uppersides ofthe finger pieces 26 and exerting a downward force or push which will not onlytend to move the cup! !8 and the shoulders 2| downwardly but will tend to swing the inwardly crimped noses 25 into the annular In this condition the bottle may be decanted and the cream poured while the milk is restrained in the bottle.

To detach the device the fingers are engaged beneath the finger. pieces 26 and an upward force or push exerted which Will tend to rotate the elbows 23 outwardly about the shoulders 2| thus causing the disengagement of the latch noses 25 from the undercut groove I6. The same upward push, after releasing the device will lift the attachment out of the bottle. As the device is lifted upwardly the crimped-in noses 25 will ride along the outer surfaces of the bottle lip 14 thus tending to pull the arms 20 outwardly, the spaces 24 allowing of this movement.

The use of two diametrically positioned arms 20, two shoulders 2|, two elbows 23, two latch noses 25, and a pair of finger -pieces26, enables the attachment to be firmly latched in the bottle I so that it need not be held in place by human fications being restricted only by the scope of the following claims.

What is claimed is: V 1'. In a creamseparating milk bottle, abottle body, a narrow elongated neck on the body, an inverted frusto-conical valve surface in the lower part of said neck, said neck having an external groove near its upper part, a concave-convex resilient cuphaving a freely expanding and contracting upper rim for seating against said conical valve surface, arms connected withsaid rim and having outturned upper portions for embracing the upper end of the bottle neck, said outturned portions of the arms having resilient inwardly projecting portions normally contracted into said groove, and means for disengaging the latches from the groove.

2. In a cream separating milk bottle, a bottle body, a neck thereon having an external overhanging lip and at its internal base portion an inverted frusto-conical valve surface, a cup of resilient material of concavo-convex form having a rim unsupported diametrically and freely contractible and expansible against the valve surof said arms and adapted to encounter the upper end of the bottle neck, said arms extending down from the outer ends of said shoulders for normally contacting the outside surface of the upper part of the bottle neck and extending outwardly to form curved finger pieces, said downwardly extending parts having inwardly projecting portions at their lower ends to engage beneath the overhanging external lip, the distance between the upper end portions of said arms and, said downwardly extending portions being greater than the thickness of wall at these points of the bottle neck whereby to leave spaces between the arms and the adjacent inner surface of the bottle neck to permit limited movement horizontally of the arms.

RAYMOND W. McALISTER. 

